8547445728 has 96 divisors (see below), whose sum is σ = 24976213920. Its totient is φ = 2843873280.

The previous prime is 8547445723. The next prime is 8547445757. The reversal of 8547445728 is 8275447458.

8547445728 is a `hidden beast` number, since 8 + 547 + 44 + 57 + 2 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8547445723) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 472368 + ... + 490128.

It is an arithmetic number, because the mean of its divisors is an integer number (260168895).

Almost surely, 2^8547445728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8547445728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12488106960).

8547445728 is an abundant number, since it is smaller than the sum of its proper divisors (16428768192).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8547445728 is a wasteful number, since it uses less digits than its factorization.

8547445728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18337 (or 18323 counting only the distinct ones).

The product of its digits is 10035200, while the sum is 54.

The square root of 8547445728 is about 92452.3970916925. The cubic root of 8547445728 is about 2044.6177056515.

The spelling of 8547445728 in words is "eight billion, five hundred forty-seven million, four hundred forty-five thousand, seven hundred twenty-eight".